TY - GEN A1 - Laine, Miikka Benjami A1 - Martin-Creuzburg, Dominik A1 - Litmanen, Jaakko J. A1 - Taipale, Sami J. T1 - Sterol limitation of Daphnia on eukaryotic phytoplankton: A combined supplementation and compound-specific stable isotope labeling approach T2 - Oikos KW - liposomes KW - nutritional ecology KW - stable isotopes Y1 - 2024 UR - https://nsojournals.onlinelibrary.wiley.com/doi/epdf/10.1111/oik.10359 U6 - https://doi.org/10.1111/oik.10359 SN - 1600-0706 SP - 1 EP - 14 ER - TY - GEN A1 - Helmer, Michelle A1 - Helmer, Desiree A1 - Yohannes, Elizabeth A1 - Newton, Jason A1 - Dietrich, Daniel R. A1 - Martin-Creuzburg, Dominik T1 - Dissolved nitrogen uptake versus nitrogen fixation: mode of nitrogen acquisition affects stable isotope signatures of a diazotrophic cyanobacterium and its grazer T2 - PLOS ONE KW - Cyanobacteria KW - Nitrogen Isotope Y1 - 2024 U6 - https://doi.org/10.1371/journal.pone.0306173 SN - 1544-9173 SN - 1545-7885 VL - 19 IS - 8 ER - TY - GEN A1 - Kiene, Marvin A1 - Schott, Matthias A1 - Martin-Creuzburg, Dominik A1 - Laforsch, Christian T1 - Food quantity and quality modulates inducible defenses in a common predator–prey system T2 - Limnology and Oceanography KW - Zooplankton Y1 - 2024 U6 - https://doi.org/10.1002/lno.12595 SN - 1939-5590 SN - 0024-3590 VL - 69 IS - 7 SP - 1546 ER - TY - GEN A1 - Isanta-Navarro, Jana A1 - Martin-Creuzburg, Dominik T1 - Dornröschen aus dem Bodensee! Was uns wiedererwachte Wasserflöhe über evolutionäre Prozesse verraten können T2 - Korrespondenz Wasserwirtschaft KW - Lake Constance KW - cyanobacteria KW - eutrophication Y1 - 2024 UR - https://www.dgl-ev.de/cms/upload/Preise/Nachwuchspreis_KW_Publikation/Jana_Isanta-Navarro_kw_2024.04.pdf U6 - https://doi.org/10.3243/kwe2024.04.001 VL - 14 IS - 4 SP - 239 EP - 244 PB - Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall e. V. (DWA) CY - Hennef ER - TY - GEN A1 - Shipley, J. Ryan A1 - Oester, Rebecca A1 - Mathieu-Resuge, Margaux A1 - Parmar, Tarn Preet A1 - Kowarik, Carmen A1 - Ilíć, Maja A1 - Kainz, Martin J. A1 - Martin-Creuzburg, Dominik A1 - Obrist, Martin K. A1 - Graham, Catherine H. A1 - Gossner, Martin M. A1 - Matthews, Blake A1 - Twining, Cornelia W. T1 - Consumer biodiversity increases organic nutrient availability across aquatic and terrestrial ecosystems T2 - Science N2 - Human land-use intensification threatens arthropod (for example, insect and spider) biodiversity across aquatic and terrestrial ecosystems. Insects and spiders play critical roles in ecosystems by accumulating and synthesizing organic nutrients such as polyunsaturated fatty acids (PUFAs). However, links between biodiversity and nutrient content of insect and spider communities have yet to be quantified. We relate insect and spider richness to biomass and PUFA-mass from stream and terrestrial communities encompassing nine land uses. PUFA-mass and biomass relate positively to biodiversity across ecosystems. In terrestrial systems, human-dominated areas have lower biomass and PUFA-mass than more natural areas, even at equivalent levels of richness. Aquatic ecosystems have consistently higher PUFA-mass than terrestrial ecosystems. Our findings reinforce the importance of conserving biodiversity and highlight the distinctive benefits of aquatic biodiversity. KW - land-use KW - predator richness KW - polyunsaturated fatty acid Y1 - 2024 U6 - https://doi.org/10.1126/science.adp6198 SN - 0036-8075 VL - 386 IS - 6719 SP - 335 EP - 340 PB - American Association for the Advancement of Science (AAAS) ER - TY - GEN A1 - Kowarik, Carmen A1 - Martin-Creuzburg, Dominik A1 - Mathers, Kate L. A1 - Weber, Christine A1 - Robinson, Christopher T. T1 - Stream degradation affects aquatic resource subsidies to riparian ground-dwelling spiders T2 - Science of The Total Environment N2 - Freshwater systems have undergone drastic alterations during the last century, potentially affecting cross-boundary resource transfers between aquatic and terrestrial ecosystems. One important connection is the export of biomass by emergent aquatic insects containing omega-3 polyunsaturated fatty acids (PUFAs), especially eicosapentaenoic acid (EPA), that is scarce in terrestrial systems. Because of taxon-specific differences in PUFA content and functional traits, the contribution of different insect groups should be considered, in addition to total biomass export. In this context, one important trait is the emergence mode. Stoneflies, in contrast to other aquatic insects, crawl to land to emerge instead of flying directly from the water surface, making them accessible to ground-dwelling predators. Because stoneflies are especially susceptible to environmental change, stream degradation might cause a mismatch of available and required nutrients, particularly for ground-dwelling predators. In this study, we estimated emergent biomass and EPA export along two streams with different levels of habitat degradation. The EPA content in aquatic insects did not differ with different degrees of habitat degradation and total biomass export in spring was with 7.9 ± 9.6 mg m−2 day−1 in the degraded and 7.3 ± 8.5 mg m−2 day−1 in the natural system, also unaffected. However, habitat degradation substantially altered the contribution of crawling emergence to the total export in spring, with no biomass export by stoneflies at the most degraded sites. The EPA content in ground-dwelling spiders was correlated with emergent stonefly biomass, making up only 16.0 ± 6.2 % of total fatty acids at sites with no stonefly emergence, but 27.3 ± 3.0 % at sites with highest stonefly emergence. Because immune function in ground-dwelling spiders has been connected to EPA levels, reduced crawling emergence might impact spider fitness. Functional traits, like emergence mode as well as nutritional quality, should be considered when assessing the effects of stream degradation on adjacent terrestrial ecosystems. Y1 - 2023 U6 - https://doi.org/10.1016/j.scitotenv.2022.158658 SN - 1879-1026 VL - 855 ER - TY - GEN A1 - Kiene, Marvin A1 - Wacker, Alexander A1 - Martin-Creuzburg, Dominik T1 - Omega-3 versus Omega-6: Are We Underestimating the Ecological Significance of Arachidonic Acid in Aquatic Systems? T2 - Biomolecules N2 - The long-chain polyunsaturated fatty acids (PUFA) eicosapentaenoic acid (EPA, ω-3, or n-3) and arachidonic acid (ARA, ω-6 or n-6) are known to have distinct physiological functions, yet can both support growth and reproduction of consumers, raising the question of whether EPA and ARA are ecologically substitutable dietary resources. We explored the relative importance of EPA and ARA for the growth and reproduction of the freshwater keystone herbivore Daphnia in a life-history experiment. Both PUFA were supplemented in a concentration-dependent manner to a PUFA-free diet, separately and in combination (50% EPA: 50% ARA mixture). The growth-response curves obtained with EPA, ARA, and the mixture were virtually congruent and the thresholds for PUFA limitation did not differ, indicating that EPA (n-3) and ARA (n-6) were substitutable dietary resources under the applied experimental conditions. The actual requirements for EPA and ARA might change with growth conditions, e.g., under the influence of parasites or pathogens. The higher retention of ARA in Daphnia suggests that EPA and ARA are subject to different turnover rates, which also implies different physiological functions. Studies on the ARA requirements of Daphnia could provide valuable information on the presumably underestimated ecological importance of ARA in freshwater food webs. KW - arachidonic acid KW - eicosapentaenoic acid KW - polyunsaturated fatty acids KW - membrane lipids KW - eicosanoids KW - co-limitation KW - Daphnia KW - freshwater food webs KW - limitation KW - ecology Y1 - 2023 U6 - https://doi.org/10.3390/biom13050791 SN - 2218-273X VL - 13 IS - 5 ER - TY - GEN A1 - Ohler, Katharina A1 - Schreiner, Verena C. A1 - Martin-Creuzburg, Dominik A1 - Schäfer, Ralf B. T1 - Trophic transfer of polyunsaturated fatty acids across the aquatic–terrestrial interface: An experimental tritrophic food chain approach T2 - Ecology and Evolution Y1 - 2023 U6 - https://doi.org/10.1002/ece3.9927 SN - 2045-7758 VL - 13 IS - 3 ER - TY - GEN A1 - Moore, Taraysha D. A1 - Martin-Creuzburg, Dominik A1 - Yampolsky, Lev Y. T1 - Diet effects on longevity, heat tolerance, lipid peroxidation and mitochondrial membrane potential in Daphnia. T2 - Oecologia KW - PUFA KW - Lipid Peroxidation Y1 - 2023 UR - https://link.springer.com/article/10.1007/s00442-023-05382-1 U6 - https://doi.org/10.1007/s00442-023-05382-1 SN - 0029-8549 VL - 202 IS - 1 SP - 151 EP - 163 ER - TY - GEN A1 - Twining, Cornelia W. A1 - Blanco, Andreu A1 - Dutton, Christopher A1 - Kainz, Martin J. A1 - Harvey, Eric A1 - Kowarik, Carmen A1 - Kraus, Johanna M. A1 - Razavi, N. Roxanna A1 - Martin-Creuzburg, Dominik A1 - Parmar, Tarn Preet A1 - Richoux, Nicole A1 - Saboret, Gregoire A1 - Sarran, Charlie A1 - Schmidt, Travis S. A1 - Shipley, J. Ryan A1 - Subalusky, Amanda L. T1 - Integrating the bright and dark sides of aquatic resource subsidies—a synthesis T2 - Ecology letters N2 - Aquatic and terrestrial ecosystems are linked through the reciprocal exchange of materials and organisms. Aquatic-to-terrestrial subsidies are relatively small in most terrestrial ecosystems, but they can provide high contents of limiting resources that increase consumer fitness and ecosystem production. However, they also may carry significant contaminant loads, particularly in anthropogenically impacted watersheds. Global change processes, including land use change, climate change and biodiversity declines, are altering the quantity and quality of aquatic subsidies, potentially shifting the balance of costs and benefits of aquatic subsidies for terrestrial consumers. Many global change processes interact and impact both the bright and dark sides of aquatic subsidies simultaneously, highlighting the need for future integrative research that bridges ecosystem as well as disciplinary boundaries. We identify key research priorities, including increased quantification of the spatiotemporal variability in aquatic subsidies across a range of ecosystems, greater understanding of the landscape-scale extent of aquatic subsidy impacts and deeper exploration of the relative costs and benefits of aquatic subsidies for consumers. KW - Aquatic subsidy KW - Biodiversity KW - Climate change KW - Contaminants KW - Land use change KW - Nutrients KW - Resource subsidie Y1 - 2025 UR - https://onlinelibrary.wiley.com/doi/10.1111/ele.70109 U6 - https://doi.org/10.1111/ele.70109 SN - 1461-0248 SN - 1461-023X VL - 28 IS - 4 SP - 1 EP - 20 PB - Wiley ER -